<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <!-- React核心包 最先引入 提供一个对象React -->
  <script src="../react18/react.development.js"></script>
  <!-- React操作DOM的包 提供了一个对象 ReactDOM -->
  <script src="../react18/react-dom.development.js"></script>
</head>

<body>
  <!-- React操作的容器 -->
  <div id="app"></div>

  <script>
     const vp = React.createElement('h2',{},'hello')
    const roo = ReactDOM.createRoot(document.getElementById('app'))
    roo.render(vp)
    // const vD = React.createElement('h2',{},'hello')
    // const roo = ReactDOM.createRoot(document.getElementById('app'))
    // roo.render(vD)
    //创建一个虚拟DOM
    // const vDom = React.createElement("h1", {}, "hello React");

    // //把虚拟DOM交给React 渲染到容器中
    // const root = ReactDOM.createRoot(document.getElementById('app'));
    // root.render(vDom)
  </script>
</body>

</html>